活化煤系高岭土吸附城市污水中有机物的研究

摘要

考察了吸附平衡时间、污水浓度、液固比、反应温度和pH值对碳酸钠活化煤系高岭土吸附城市生活污水中有机物的影响,在此基础上又研究了吸附等温线.结果表明,当吸附平衡时间为2h,液固比为60 mL/g,pH为6时,活化煤系高岭土对城市生活污水中有机物的吸附率达到最大,且加热不利于吸附反应的进行.碳酸钠活化煤系高岭土对城市生活污水中有机物的吸附行为更符合Langmuir方程,其吸附是以化学吸附为主.%The effect that the organic matter in the municipal wastewater was adsorpted by sodium carbonate-activated coal-series kaoline with the time of adsorption equilibrium, the concentration of wastewater, the liquid-solid ratio, reaction temperature, pH changed was studied, then the adsorption isothermal was studied too. The result showed that when the time of adsorption equilibrium was 2 h; the liquid-solid ratio was 60 mL/g; pH was 6, the adsorption rate that the organic matter in the municipal wastewater was adsorpted by sodium carbonate-activated coal-series kaoline could arrive the highest, and heat was bad for the adsorption reaction. The reaction accorded to Langmuir equation, and the adsorption reaction was main chemisty.